ailerons
nounUK /ˈeɪlərɒnz/
US /ˈeɪlərɑːnz/
Small moving parts on the back edge of a plane's wings that help it tilt and turn.
The pilot moved the ailerons to make the plane bank to the left.
OTHER MEANINGS
2. Hinged sections on the trailing edge of an aircraft wing used to control roll.
Engineers inspected the ailerons before the test flight.
3. Movable surfaces on a model aircraft or drone that adjust its balance in the air.
He adjusted the ailerons on his remote-controlled plane.
4. In some contexts, small flaps or fins that help steer a flying object.
The kite's ailerons kept it steady in the wind.